diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index e806761..dd564ac 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -410,6 +410,7 @@
       'base/debug/dump_without_crashing.cc',
       'base/debug/stack_trace.cc',
       'base/debug/task_annotator.cc',
+      'base/debug/thread_heap_usage_tracker.cc',
       'base/environment.cc',
       'base/feature_list.cc',
       'base/files/file.cc',
@@ -507,7 +508,6 @@
       'base/third_party/dmg_fp/g_fmt.cc',
       'base/third_party/icu/icu_utf.cc',
       'base/third_party/nspr/prtime.cc',
-      'base/threading/non_thread_safe_impl.cc',
       'base/threading/post_task_and_reply_impl.cc',
       'base/threading/sequenced_task_runner_handle.cc',
       'base/threading/sequenced_worker_pool.cc',